Peter e



v ?.s'H'BAR l t DOOR 0R FRAMEPORPUDDLINGVPURNAGES.

No;87,2138.` i 1 Patented Mar. 2, 1869,

ab, ,"a/ 9% Y o) dat.-.

-w y y a puddling-inrnace door.

l maid vPETER EsHEAEoE SAUGERTIE nter @anni tire.

s, NEW YORK, AssIG-Noa ro SELF AND WILLIAM MULLIGAN, OF THE SAME PLACE.

Laim Parma No. 87,438, aan March 2, leso.

IMPRovnMmv'i' 1N THE noone on FRAMES or Pornstar!centramoss.

The Schedule referred to in these Letters Patent and making part of tholsanle. y'

ToV all whom 'it may concern.-

A Beit known that I, Pn'rEaE. Srmnn, of Saugerties, in the county ofUlster, and State of New York, have invented a new and improved Paddling-Furnace Frame; and I do hereby declare thatA the following is a full, clear, and exact description thereof', which will The object of this Vinvention is toso construct the,

bit or techsupport of a pudillingffurnace door, that .it

cannot shrink and bend by coming in contact with the',

cold metallic surface underneath, and that it can be moved in, it' its inner exposed edge has been destroyed by the excessive heat; also to so construct the frame of thedoor, that the tire-brick built against it'can be left stronger, t-o be less liable to burn out. 4

The invention consists, first, in arranging the Dit, which is dovetailed into the frame, aabove a concave surface, so that its unde'r side cannot come in cont-act with the cold metal surface of the frame,- to prevent its becoming bent.

The invention consists, second, in the application, to such sliding bit, of a retaining-pin, which is arranged in ri-ont of it, and whichhas a head projecting from one side. By turning this head inward, t-lle bit will he moved, 'and held further in, and it can thus be made available, even after its inner edge has been burnt.

The invention linally consists in forming an inclined face on the back oft-he hollow inetallic door-frame, so that thc'brick in contact with the said frame willuot s o easily burn, and fall to pieces.

A, in the drawing, represents thc'metallic frame of The same is cast hollow, to, allow the circulation of" water, as indicated in jigs. 1 and 2, and has, to bring the water in rear of the door B, an inward-picketing part a, as usual.

x. i i i This portion a has heretofore always been of rectangular cross-section, but I make it triangular, thereby producing the inclined back face b, which is clearly.'

shown in fig. 2.

The tire-brick, built up against the frame A, are ,thus considerably thicker, vwhere they come in contact with the inclined face b, than they could be if built against the rectangular projection. 'lhey will consequently not be so easily burnt and destroyed, andthe flame will Anot so soon b eexposed to the direct action of the ire as it formerly was.

C represents the hollow sill of the frame. In its upper surface is formed a recess, for the reception of the dat hit-plate D, which bit-piate has bevellcdedges, so that it is dovetailcd into the recess, as shown iii iig. 1.

The surface of the recess is concave, as shown,- so

that there will be an opensp'ace, c, underV the bit,

the purpose heretofore set forth.

represents a pin, with a head, c, projecting from one side. `1t is fitted through a perforated ear,.f, which projects from the sill C, and ts against the froutedge of the bit D.

When the rear edge ofthe bit is burnt, the pinH-is turned, with its head, inward, to hold the bit further in. Y

Having thus described rny invention, I claim as new, 4and desire to secure by Letters Patentf 1 Providing the hollow metallic frame ofa puddllng furnace door, with an inclined back face, b, substantially as herein shown and described, for the purpose specified.

2. The sliding bit D, when fitted over-the concave 'face of the sill G, for the vpurpose ofnot coming in contact with the metallic surface of the sill, as setv forth.

3.v lThe pin d, having the head e on one side, iu combination with the sliding bit-plate D, allarranged substantially as herein shown and described. t

P. E. SHEAR.,

Witnesses: ,4

SAMUEL WATERMAN, GEORGE Sama. 

